linux-kernel - Re: [REVIEW for merge] kbuild updates including silence of section mismatch check

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Date:	Sat, 02 Feb 2008 22:25:51 +0100
From:	Frans Pop <elendil@...net.nl>
To:	Sam Ravnborg <sam@...nborg.org>
Cc:	akpm@...ux-foundation.org, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [REVIEW for merge] kbuild updates including silence of section mismatch check

Sam Ravnborg wrote:
> --- a/scripts/setlocalversion
> +++ b/scripts/setlocalversion
> @@ -45,3 +45,18 @@ if hgid=`hg id 2>/dev/null`; then
> # All done with mercurial
> exit
> fi
> +
> +# Check for svn and a svn repo.
> +if rev=`svn info 2>/dev/null | grep '^Revision' | awk '{print $NF}'` ; then
> +       changes=`svn status 2>/dev/null | grep '^[AMD]' | wc -l` 
> +
> +       # Are there uncommitted changes?
> +       if [ $changes != 0 ]; then
> +               printf -- '-svn%s%s%s' "$rev" -dirty "$changes"
> +       else
> +               printf -- '-svn%s' "$rev"
> +       fi
> +
> +       # All done with svn
> +       exit
> +fi

This looks broken. Unless I'm very much mistaken the 'if' statement is
always going to be true because the awk statement will always execute
without error. Try: echo "" | awk '{print $NF}' || echo Error

So, the code should probably be changed to:
+if rev=`svn info 2>/dev/null | grep '^Revision' ; then
+	rev=`echo $rev | awk '{print $NF}'`
+       changes=`svn status 2>/dev/null | grep '^[AMD]' | wc -l` 

or alternatively:
+if rev=`svn info 2>/dev/null | grep '^Revision' | awk '{print $NF}'` && \
+   [ -n "$rev" ] ; then 
+       changes=`svn status 2>/dev/null | grep '^[AMD]' | wc -l` 

Cheers,
FJP

P.S. Looks like the mercurial section is missing some indentation.
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